E-620 IR capabilities
I was just testing the E-620 IR capabilities the other day. It turns out that it can be used to obtain reasonable results, much better than what I was getting with the G1 and previously with the E-410. With reasonable light, handheld IR is possible thanks to the IS system. Images are not very sharp, but they contain a good level of detail and look reasonably crisp if not magnified too much. Composition is also a lot easier than with the E-410, as the live view mode of the E-620 is a lot more sensitive to IR.
Here is one sample so that you can see what can be achieved handheld (1/3s at f:3:5, ISO 250, taken with a Hoya R72 filter)